SOLUTION: If we put a cool object into a preheated oven, Newton's law of heating tells us that the difference between the temperature of the oven and the temperature of the object decreases

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Question 1042380: If we put a cool object into a preheated oven, Newton's law of heating tells us that the difference between the temperature of the oven and the temperature of the object decreases exponentially with time. The percentage rate of decrease depends on the material that is being heated. Suppose a potato initially has a temperature of 75 degrees and the oven is preheated to 375 degrees.
Use the formula D = 300 × 0.98t,
where D is the temperature difference between the oven and the potato, t is the time in minutes the potato has been in the oven, and all temperatures are measured in degrees Fahrenheit.
What is the temperature difference after
15 minutes?
(Round your answer to the nearest degree.)
________degrees.
I said 22 degrees (21.57 rounded) can some one tell me why this is wrong and the right answer.
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
.
The formula D = 300 × 0.98t is incorrect and is inapplicable in this case.